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Graham · Outer Hebrides
Heacla (Thacla] [Hecla)
Hecla (606m) is the most northerly of the trio of rocky Lewisian gneiss peaks that crown eastern South Uist, sitting in the NF83 square overlooking Loch Sgioport and the Minch. Its summit cairn perches on a tilted slab with views across to Beinn Mhor, north toward the Harris hills and east to Skye on the rare clear day. The lower slopes are a maze of lochans and bog characteristic of the Uist hinterland, but the upper hill is unexpectedly Alpine in feel, all bare rock ribs and short turf.
Quick facts
- Height
- 606.6m/ 1990ft
- Distance
- 12 km
- Ascent
- 454 m
- Time
- 3–6 hrs
- Grid ref
- NF825344
- Parking
- NF815323
- Nearest
- Fort William
- Dogs
- Dogs on lead required near livestockDog-friendly guide ↗
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Standard route
blanket bog 45% · rocky ridge 30% · heather moorland 25%
The usual approach is from the road end at Loch Sgioport (NF815323), tracking south-east around the foot of Maoladh Mhicearraig and then climbing the western corrie onto the broad upper plateau. The day comes out at around 12km with 454m of ascent. The summit slabs are easy if dry but the gneiss becomes slippery in wet weather; ascend rather than descend the steeper steps where possible.
Terrain
The lower moor is a tangle of peat banks, lochan-fringed bog and crooked feeder streams; route-finding to the foot of the hill is harder than the climb itself. Above 300m the ground steepens onto bare gneiss slabs interlaced with strips of moss campion and crowberry. The summit ridge is short but the seaward edge falls away in broken cliffs — keep well inland in mist.
In winter
Hecla rarely holds true winter conditions but Atlantic squalls roar in unchecked from the west, and a wind-chill below minus ten is possible even in a thaw. The slabs of the upper hill ice over in clear cold spells and become genuinely treacherous without crampons. Daylight is limited and the only safe option is a short clear-weather window with the forecast checked twice.
Best time of year
Getting there
- Glasgow5h 41m
- Edinburgh6h 35m
Ferry access
Oban → Lochboisdale (South Uist)
- Crossing time225 min
- Summer sailings1 sailing daily plus additional weekend sailings (Apr–Oct)
- Winter sailings4–5 sailings per week (Nov–Mar)
- Book ahead14 days
Plan an overnight stay. Alternative: Uig (Skye) → Lochmaddy (North Uist) then drive south across the causeways.
Book on CalMac ↗OS maps: OS Landranger 22
Mobile signal: Poor. South Uist; very limited coverage on most networks.
Current conditions
Daylight Today
- Sunrise
- 04:43
- Sunset
- 22:10
- Civil dawn
- 03:41
- Civil dusk
- 23:13
NOAA Solar Calculator · 31 May 2026
Pair with
Curated multi-hill combinations from Heacla (Thacla] [Hecla).
Heacla (Thacla] [Hecla) — common questions
- How hard is Heacla (Thacla] [Hecla)?
- Heacla (Thacla] [Hecla) is rated 4/5 (challenging) on the OutdoorSCOT scale. The standard route covers about 12km with 454m of ascent and takes most walkers 3-6 hours. Terrain: The lower moor is a tangle of peat banks, lochan-fringed bog and crooked feeder streams; route-finding to the foot of the hill is harder than the climb itself.
- Where do I park for Heacla (Thacla] [Hecla)?
- Standard parking is at NF815323 near Fort William. Check the parking grid reference on an OS map before travel; informal laybys can fill on summer weekends.
- When is the best time to climb Heacla (Thacla] [Hecla)?
- The standard good-weather months for Heacla (Thacla] [Hecla) are May, June, July, August, September. Outside those months, expect winter conditions on the high ground — full mountain kit, navigation skills, and a check of the SAIS avalanche forecast for the relevant region.
- Can I bring my dog up Heacla (Thacla] [Hecla)?
- Yes, but dogs must be kept on a lead — there is livestock or ground-nesting bird interest on the route.
- Is there mobile signal on Heacla (Thacla] [Hecla)?
- Poor. South Uist; very limited coverage on most networks.
- How do I get the ferry to Heacla (Thacla] [Hecla)?
- Oban → Lochboisdale (South Uist). 1 sailing daily plus additional weekend sailings (Apr–Oct) in summer; 4–5 sailings per week (Nov–Mar) in winter. Book at least 14 days ahead. Plan an overnight stay. Alternative: Uig (Skye) → Lochmaddy (North Uist) then drive south across the causeways.
- Is Heacla (Thacla] [Hecla) safe in winter?
- Hecla rarely holds true winter conditions but Atlantic squalls roar in unchecked from the west, and a wind-chill below minus ten is possible even in a thaw. The slabs of the upper hill ice over in clear cold spells and become genuinely treacherous without crampons. Daylight is limited and the only safe option is a short clear-weather window with the forecast checked twice.